Fusible link.



m3533675# PATENTED JULY 2, 19o?. F. P. SMITH.

USIBLE LINK. APPLIoATm-LQ'ILED 1120.3,1906

INVENTOR ATTORNEYS. m\

UITD f sTAsn FRANK F. SMITH, OF

To qll whom "it may concern:

' Be it known that I, FRANK F. Sismi, a citizen oi the United States,residing st Newark, in the county of Essex undState-of New Jersey, haveinvented certain new and useful Improvements 4in Fusible Links; und lldo hereby declare the following to he a full, clear, und exactdescription-of the invention, such as will enable others skilled in theart to which it 'appertainsto make and use the same, reference being hadto the accom- 1 0 thereon, which form a part of this specification.

lThe presentinvention has'referenc-e generally to irn- A l provenientsin fusible links or connections; and, the inventionrelutes moreparticularly to a novel means or 15 device in the orxnof a. fusibleconnection which may be used with other devices, such as chains or otherflexible connections; for retsining Windows, sky-lights, doors, or thelike, in 'an open .relst'ioin but from which s.. part i's nlelted incase of excessiveheat due to a fu'end allows the 'fiutomatic closing'ofjtllie' Window, skylight, door,

i The invention hss for itsprincipal obj ect toprovile a fiisble-liukfor 4the purposes above set forth, which is 'sini le in constructionand-is sily'usedso'as'to be quick in its action. Furthermore, theconstruction is '.of such n nature that accidentel separation of thelirikyor distortion of the same, 'is rendered impossible.

A further obj ect of this invention is to Apro'iide a oon-I struction offusible link which can berna'de-of thinror light metal, insted of s.heavy n'ietal' as heretofore, and, furthermore, 'whereY it is desired,the-linkl embodying.

the separation of its parts by renewing the fusible plug. A stillfurther objecto this in ijentiun is to provide `a` fusible link whichthesepqrble parts o'rmembrs are united with the least possible 'qusntityof fusible material or solder; but, the construction end rrangement f ofthe parts being such'that increased strengthand Specification of LettersPatent.

p zinying drawings, and to letters of reierence marked theprinciples ofthis invention can lie used again after v` cular o r other suitablecut-away' portion 10 t 'the other PATENT FFCE. i

.NEWARK, NEW .l'lil'tSF/Y. I

FUSIB LE LlNK.

Patented July 2, 1907.

Application fllud DGGGlDlNJr 3,190-. Serial No. 346,007.

l ,saidseetionbeing token on lino 4-4in said Fig. 2; and

Figf a crosssoction of the sume, taken online 5- 5 o said Fig. 2. Figs.(Bund 7 are dctailluce views of the two separable parts ol the saidfusible link. Fig. 8 is a transverse section of a. slightly modifiedconstruction of iusiblclluk. Similar charrcters oi reference areemployed in all of the above described views to indicate -corrspondingparts. I l :y Referring novir to the several-figures of the drawings,'the referencehamcter 1- indicates the completefusible' link or'connection embodying theA principles of the. present invention, thesaine comprising a main b0dyportion or plate 2 provided upon each of-itsside-edges 1 .with turned-over portions or bezels 3 adapted to form "IOin connection with the said main body-portion or plate 2 a pairoioppositely situated guide-channels or grooves l 4. 1The said mainbody-portion or plate 2 isfurthermore provided with s suitably formedperforation or hole 5 in one end and at the opposite end" it muy be.provided in its edge with a, semi-circular or other suitl.tbly'formedcutaway portieri 6.- -The ,said body or plate 2 is also "providedwith another holeor perfo'ration 7, located pleerably midwaybetweenthetwo. ends o said plate. Adapted t `be: inserted in aaid fill)guide'clmn'nels or gifooves 4 sind slida'bly arranged in the same isssepamhioplate or member 8. This separable plate or member isprovidedwith a suitably shaped hole or perforation 9 :it one 'end and a semi-oirs 8 5 j sn The said' pleite or member 8-is also f ormed'with anot erholeor perforation 1'1, adaptedio register with' l Athe holeolf-perforstion 7 oilthe plate 2, yhen the tWQ plates are placeduponeach other, in themnnnenilluli- 'l tintedin the draviringsifAThe'said separable plate 8 is, furthermore, provided upon -its oppositeedges at the end .which the hole or'peroration 9 shoulders or off-sets12, iwhih gangzige withlfheg-end,of'A

rigidity of thelparts is-the result, 'Without the least danger oftheparts'seprating under ordinary changes .of the varying degrees oftemperature.

.With the various olriiocts of the invention in view, the sameconsists-in the novel fusible link hereinafter set forth, as well as inthe general 'constructions and ar- 45' rangements of the various parte,all of which will be hereinaftermore iully described and then finallyembodied in 4the clauses of the clsin'is, which are appended to andwhich form an essential part of this specification. The invention isclearly illustrated in the scolnpanyl ing drawings, in whiel i A Figurel is a face view of one of the sides of the fusible link orvconnectionembodying the principles oi' 1inpresentiiivcnton; and Fig. 2 is u viewof the oppositeI face of the saine. Fig. 3 is a side edge view of thesaid fusible link; Fig. sis o longitudinal section oi the saine,

the main body-portion or plate 23nd s erve to bing th holes orperlorations end cutavay portions 'withV which each plate is provided'in proper registration with each operative relation, as willb`e`'clearly 'evident roxu'gm inspection of the accompanying drawings.To prevent tlievse'parble plate 8 from separating' from thel mainbody-portionor plate 2 when-thesaxne are subjectedt-o the ordinarytemprature, a iusibl I plug or rivet 13 is' inserted in the holes orperforations 7 and 1l of the respectiveplatesfbove mentioned,. l .Suidfusible plug 'or rivet 13 being-preferably providedl 1 05 sith o hei-fdor upset portion 14 upon each jef'nd thereof, :o prevent the accidentelslipping out Aor 'other dis placement of the suid'iusible plug. lt. willbe readily understood, hat, when the tem- 'Parature rises shove ucertain predetermined degree other 'when'the said plaltes areplaicedtoget'her in their registering with u. hole of the other plate,lond seid plates being provided with in'tcrxnedlately disposed holeswhich 75 y'telescoping the separoble plate 8 within themain-body-portion or plate 2 by means of the bezel 3 and the' channelsor grooves 4,

the said plates cannot be wrenched sidewise or from each other and thusseparated accidentally. Thus, it 1." will l.he evident, that a simple,rigid, strong, and durableiink is provided; and, furthermore, by reasonof the fact that a verv small usible plug o r rivet can be used relationto each other, substantially ss and for the pur- 80 and nt its oppositeend with n semi-circular cut-awl1y-85 s ed by the mpi-d melting orfusing of the said fusi said registering holes, said plug being made upon. its ends 9.0

g Vblegplug or rivet. It will also be understood, that hy "providing theone plate with the raised edge-portions `to prevent nuy oscillatorymovement of said plates with relation to each other, substantially `nsand foxthe purposes set forth. Q5

:sopor-ably and fusibly `connected pistes, raised edgeportlous extendingalong tile longitudinal marginall edgesol' one of said plates, and aturned-over part on each raised edge-portion projecting pnrtway over thelongi- 10i) plates oscillating upon each other, which would natul'rallyproduce a. shearing action-of the fusible plug is entirely overcome.' At-the same time, the 'raised edgeportions of the one plate being made tooverlap the marginal edges of the othefplizte, any likelihood of the twoplates becoming distorted, which'distortion would l tend to loosen thefusible plug, is also obviated, and the the purposes set forth. v

8. A fusible connection or link comprising two tint -and 1,05

separnbly and fusibly connected plates, raised edgepor 'marginal edgesof of the drawings. y Iclaimrf'.- i y V 4 ction oi- Iink comprisingseparabiy 1;.A-tnsibie -conne 'connectedy members adapted to be arrangedupon each other, said members being provided with holes or perfors edgesof the other plate, all arranged to provide a pair o f 11() .35 metallilllng 7'said registeringholes, said plug being made ,tm-th' 115 withholes or perforntlons adapted to register with each A other, n plug otfusible, metal ,lilling' said registering 40 -ench other," each memberbeing provided ut one endwitli, holes' raised idge'portlong extendingalong the longi' 120 A15S-holesl -whlch register with each other, und aplug oi' y 12.5 and for the purposes set forth. 10. A fusible connectionor link comprising two separahly connected pistes, said platesheingprovided with holes or perfol'utlons adapted to'legister with eachother, a plug-of fusible meta! iiillng said registering holes, raised130 50. upon `each other, each leinber heingprovided at one end basedholes' which eglsmx. with 'eachother' and u plug ot plate' adapted toengage with the ends ofthe 'raised edge- 135 purposes set forth.

11. Afusible Yconnection or link comprising two Separnllly connectedplates, each plate being provided nt one -end with u hole :1nd :It itsopposite end with a semi-circular 140 G mhly connected plzites.aduptedto he nrrnngld upon each cutaway portion. the semi-circuiar 'cut-awayportion of holes wlii'hnegstel' with encil other, n plug of fusiblemetall filling said registering holes, raised edge-portions 145 on oneof said plates, and a turnedfover part on euch raised portion,l nilarranged to provide-n. pair otguides, the other plate b elngrslidahiyheld between said guides against distortion, suhstnntiaiiy as und forthe purposes set forth. V A 15() G5 on one of said pltes with' which theedges of the other sin] d.for the purposes set forth; y. j l fusibleconnectionV or link comprising two sepaimyfcqnnected' the semi-circularcut-away plnte,'ahd said plates being providedy with Intez'mediately hother, a plug of raised edgetions' or the.

other plate, substantially 11s and for the` purposes set forth.

AI have hereunto In testimony, that I claim the intention set forthabove set v my hund this 26th day of November 1906 FRANK F. SMITH.

Witnesses: 1 FIIEDK. C. FRAENTZEL, FREDERICK JAmsoN.

